Tokio Marine Holdings, Inc. is an insurance holding company. Through its subsidiaries and associated companies, the Company operates in four business segments. The Domestic Non-life Insurance segment is engaged in the underwriting of non-life insurance and small amount short term insurance in Japan. The Domestic Life Insurance segment is engaged in the underwriting of life insurance in Japan. The Overseas Insurance segment underwrites non-life insurance and life insurance, as well as other businesses in overseas countries. The Financial and General segment is engaged in the operation of financial derivative businesses. As of March 31, 2013, the Company had 244 subsidiaries and 25 associated companies. On June 28, 2013, it turned a subsidiary Tokio Marine Seguradora S.A. into a sub-subsidiary.